A study by the Leibniz Institute for Zoo and Wildlife Research found that cheetah marking trees serve as hotspots for communication among multiple mammalian species. These trees were visited more frequently by some species, such as black-backed jackals and warthogs, suggesting they gain important information from the scent marks. In co...
Research suggests that the ratio of adult females to males influences sex roles in animal species. Variation in this ratio can lead to differences in mate competition, parental care, and social behavior among species. The study proposes that understanding these dynamics can inform conservation efforts.
Researchers found that acoustic monitoring alone is insufficient for large wind turbines, emphasizing the need for carcass searches and additional ultrasonic detectors. Uneven bat distributions can lead to incorrect curtailment times, putting many bats at risk.
A team of Berlin scientists has successfully grown stem cells and mini-brains from Sumatran rhino skin cells, paving the way for potential use in assisted reproduction. The next step is to create sperm cells that may help save the critically endangered species from extinction.
Researchers from Humboldt University of Berlin and Leibniz Institute for Zoo and Wildlife Research examined the facial motor nucleus of African and Asian elephants. They found more facial motor neurons than any other terrestrial mammal, with African savanna elephants having up to 63,000 neurons.
The global ranger workforce is insufficient to manage current protected areas, with only 286,000 rangers needed for 20 million square kilometers. Increasing the workforce five-fold is necessary to meet the 30% conservation goal by 2030.
A new study found that daytime pastoralist activities do not negatively affect spotted hyenas in Tanzania, contrary to previous research. The study analyzed 24 years of data from eight hyena clans and found that the hyenas' reproductive performance and physiological stress levels remained similar to those of unexposed clans.
Researchers reconstructed the genome organization of the earliest common ancestor of all mammals using high-quality genome sequences from 32 living species. The study reveals that the mammal ancestor had 19 autosomal chromosomes and conserved gene blocks across modern mammalian genomes.
Researchers found that kinship dynamics vary across species and sex, influencing helping behavior. In spotted hyenas, females' relatedness decreases with age, while males' increases, affecting their willingness to help groupmates.
Researchers used computer models to link red squirrel sightings to environmental parameters, identifying areas with missing ecological corridors. The study aims to improve urban planning by understanding the challenges faced by urban squirrels due to habitat fragmentation and climate change.
Growing up in harsh conditions has a lasting impact on hyenas' performance and social relationships. Early-life adversity affects their ability to thrive in the wild.
Research reveals urban bat species have lower echolocation call frequencies, small bodies, and flexible roosting habits compared to rural bats. These traits may make them more adaptable to city life, whereas larger species with high calling frequencies tend to thrive in rural areas.
Common noctule bats form mobile sensory networks to optimize prey localization, reducing foraging time by 40%. This collaborative strategy enables bats to effectively control agricultural insect pests and contribute to ecosystem balance.
A study reveals urban waters exhibit distinct microbial signatures compared to rural lakes, indicating humanization and eutrophication's effects on ecosystems. This shift may increase the risk of pathogens and contamination in urban areas.
A team of scientists from Leibniz Institute for Zoo and Wildlife Research found that forest specialist bats avoid wind turbines due to habitat loss. The researchers recommend that wind turbines should not be sited inside forests, but rather in open landscapes with compensatory measures.
Three African vulture species have significantly larger home ranges than existing protected areas, increasing exposure to human-related food sources and environmental toxins. Conservation efforts require addressing challenges outside protected areas.
A study by Leibniz-IZW scientists reveals that the death of common noctule bats at wind turbines interrupts natural food chains, compromising ecosystem services like pest control. The loss of these insectivorous bats has significant consequences for agriculture and forestry in Germany.
Debilitating snare injuries in female spotted hyenas of the Serengeti delayed their age at first reproduction and reduced litter size, while also decreasing offspring survival rates. This long-term decrease in reproductive performance may result from increased inflammatory and immune responses to snare injuries.
A study estimates that old wind turbines can be deadly for protected bat species, with some turbines claiming up to 70 bat victims per year. The researchers recommend adjusting the operation of old turbines to current regulations, or even dismantling them if they are located in unfavorable sites.
A new study has discovered that the raw material for evolution is much more abundant in wild animals than previously believed. Researchers found that many populations of birds and mammals can evolve surprisingly fast, with their genetic difference in survival and reproduction being two to four times higher than previously thought.
A study comparing whole genomes of several mustelids, including the tayra and wolverine, identifies multiple sources of genomic variation contributing to species-specific traits. The research sheds light on how these adaptations evolved in response to different ecological challenges.
A new study of over 100,000 births in pre-industrial Europe found that mothers of twins are not more fertile than average. In fact, the researchers discovered that women who give birth to twins actually have lower fertility rates when accounting for 'lottery ticket effect' biases.
A team of researchers found that spotted hyenas in the Serengeti National Park adjust their foraging behavior in response to climate change, with a decrease in migratory herd presence due to increased rainfall. Despite this, lactating hyenas successfully nurse their young, suggesting high plasticity in their foraging behavior.
Deer in Germany and Austria tested negative for SARS-CoV-2 antibodies, a stark contrast to white-tailed deer in North America. The research suggests that human-deer contact and pathogen spread may be hindered by managed hunting practices in Europe.
A team of researchers found significant differences in lipid profiles between sperm and erythrocytes, with more closely related species showing similarities. The study's results help improve understanding of oxidative stress on reproductive processes and assisted reproduction measures.
Camera trap surveys in six sites across the Annamite Mountains have provided new insights into the occurrence and distribution of two threatened species, the Annamite striped rabbit and dark muntjac. The study identified factors influencing their presence, including elevation and proximity to human settlements.
Researchers from Leibniz Institute for Zoo and Wildlife Research discovered a previously unknown localisation of the porcine sperm protein 'AWN', strengthening its involvement in sperm-egg fusion. The findings are crucial for improving assisted reproduction methods, including artificial insemination.
The Earth BioGenome Project aims to generate reference genomes for all eukaryotic life, providing tools for preventing biodiversity loss and pathogen spread. With over 5,000 scientists involved, the project is entering a new phase with ambitious goals, including producing genomes for 9,400 taxonomic families.
A study in Berlin found that urban areas can provide suitable habitat for bats if certain conditions are met, including low artificial light and access to vegetation and water bodies. The research involved over 200 citizen scientists and revealed that features of the urban landscape influenced the presence of bats.
A study using wildlife cameras in Berlin gardens found that foxes, raccoons, and martens avoided domestic cats, while cats exerted dominance over local wildlife. Lockdowns allowed scientists to observe interactions between these species in urban environments, shedding light on their rules and behaviors.
A study by Leibniz Institute for Zoo and Wildlife Research found that juvenile Nathusius' pipistrelle bats are killed more frequently than adults at wind turbines, with females also being disproportionately affected. This highlights the need to implement schemes to mitigate wind turbine mortality and protect migratory bat populations.
Researchers found Himalayan bats have reduced functional diversity at high elevations but maintain phylogenetic diversity. This study provides insights into the diversity of bats in the Himalayas and its response to environmental changes.
A team of scientists from the Leibniz Institute for Zoo and Wildlife Research found that three free-ranging cheetahs in the Namib Desert died after feeding on a mountain zebra infected with anthrax. The study highlights previously unknown risks to cheetah populations in the desert.
A computer simulation model of the mammalian female genital tract identifies essential physical characteristics and abilities for successful sperm migration. The study's findings have potential to improve assisted reproduction techniques in endangered species, livestock, and humans without animal experiments.
A new study found that emotions and cultural importance of large carnivores are stronger predictors of local community acceptance than livestock depredation. The Maasai pastoralists in Tanzania favour no action towards the carnivores, rejecting relocation and lethal control.
Scientists have developed new methods to retrieve mammalian viruses from water and leech samples, providing a novel approach to pandemic prevention research. The techniques used environmental DNA and invertebrate-derived DNA, allowing for the identification of known and novel viruses in wildlife reservoirs.
Researchers have identified a magnetic sense in bats, located in the cornea of their eyes, allowing them to navigate during long-distance migrations. This sense is necessary for orientation and was disrupted by anaesthesia of the cornea, yet orientation still worked with one eye.
A survey of 656 students from six countries found that over a third were unaware of zoonotic risks and One Health concept. Education on these topics is crucial to prevent pandemics.
The current loss of tropical forest fauna impedes achieving SDGs, threatening food security, infectious disease outbreaks, and climate change mitigation. Defaunation also jeopardizes human well-being and cultural significance.
New research suggests that existing acoustic monitoring measures are insufficient to reliably predict bat mortality risk at large wind turbines. To improve coverage, scientists recommend installing supplementary ultrasonic detectors and complementary sensor technologies like radar systems or thermal imaging cameras.
The BioRescue consortium has developed an ethical risk assessment framework called ETHAS to evaluate the use of assisted reproductive technologies in species conservation. The tool assesses animal welfare, safety, and ethics, helping the team make informed decisions.
Researchers discovered that retroviruses in koala genomes contribute to elevated cancer rates, with infected cells containing multiple copies of the virus. The study highlights the detrimental health consequences of germline infection by retroviruses and underscores the need for conservation efforts.
A research team from Leibniz-IZW found that water can be a vector for spreading mammalian viruses, with equine herpesviruses (EHV) remaining stable and infectious in water. The study suggests that viral stability in restricted freshwater sources enables their spread among animals, particularly during times of stress and congregation.
The BioRescue project, a northern white rhino conservation program, faced significant challenges due to the Covid-19 pandemic. Despite international travel restrictions and revenue losses, the consortium successfully continued research and made progress in embryo creation and stem-cell techniques.
Researchers found that European greater mouse-eared bats have sufficient baseline levels of key immune parameters to tolerate infection throughout hibernation. In contrast, North American bats frequently arouse from hibernation to trigger an immune response, leading to starvation and death.
Low-ranking male hyenas experience higher levels of stress when interacting with rivals, limiting their access to desirable females and reproductive success. This mechanism is more crucial than physical traits in determining offspring quality and quantity.
Researchers at the Leibniz Institute for Zoo and Wildlife Research have successfully produced in-vitro embryos from vitrified African lion oocytes, demonstrating a promising method for genetic resource banking. The study showed that half of the vitrified oocytes matured, with seven early embryos developing, providing hope for the conse...
Two new northern white rhino embryos were created in December 2020 using advanced assisted reproduction technologies. This brings the total number of viable embryos produced to five. The successful embryo creation is a result of a regular rhythm of repeated oocyte collections, which will continue if possible.